Only allow last extractor to mutate the request (#1272)

* Only allow last extractor to mutate the request

* Change `FromRequest` and add `FromRequestParts` trait (#1275)

* Add `Once`/`Mut` type parameter for `FromRequest` and `RequestParts`

* 🪄

* split traits

* `FromRequest` for tuples

* Remove `BodyAlreadyExtracted`

* don't need fully qualified path

* don't export `Once` and `Mut`

* remove temp tests

* depend on axum again

Co-authored-by: Jonas Platte <[email protected]>

* Port `Handler` and most extractors (#1277)

* Port `Handler` and most extractors

* Put `M` inside `Handler` impls, not trait itself

* comment out tuples for now

* fix lints

* Reorder arguments to `Handler` (#1281)

I think `Request<B>, Arc<S>` is better since its consistent with
`FromRequest` and `FromRequestParts`.

* Port most things in axum-extra (#1282)

* Port `#[derive(TypedPath)]` and `#[debug_handler]` (#1283)

* port #[derive(TypedPath)]

* wip: #[debug_handler]

* fix #[debug_handler]

* don't need itertools

* also require `Send`

* update expected error

* support fully qualified `self`

* Implement FromRequest[Parts] for tuples (#1286)

* Port docs for axum and axum-core (#1285)

* Port axum-extra (#1287)

* Port axum-extra

* Update axum-core/Cargo.toml

Co-authored-by: Jonas Platte <[email protected]>

* remove `impl FromRequest for Either*`

Co-authored-by: Jonas Platte <[email protected]>

* New FromRequest[Parts] trait cleanup (#1288)

* Make private module truly private again

* Simplify tuple FromRequest implementation

* Port `#[derive(FromRequest)]` (#1289)

* fix tests

* fix docs

* revert examples

* fix docs link

* fix intra docs links

* Port examples (#1291)

* Document wrapping other extractors (#1292)

* axum-extra doesn't need to depend on axum-core (#1294)

Missed this in https://github.com/tokio-rs/axum/pull/1287

* Add `FromRequest` changes to changelogs (#1293)

* Update changelog

* Remove default type for `S` in `Handler`

* Clarify which types have default types for `S`

* Apply suggestions from code review

Co-authored-by: Jonas Platte <[email protected]>

Co-authored-by: Jonas Platte <[email protected]>

* remove unused import

* Rename `Mut` and `Once` (#1296)

* fix trybuild expected output

Co-authored-by: Jonas Platte <[email protected]>

examples/customize-path-rejection/src/main.rs

@@ -6,8 +6,8 @@
 
 use axum::{
     async_trait,
-    extract::{path::ErrorKind, rejection::PathRejection, FromRequest, RequestParts},
-    http::StatusCode,
+    extract::{path::ErrorKind, rejection::PathRejection, FromRequestParts},
+    http::{request::Parts, StatusCode},
     response::IntoResponse,
     routing::get,
     Router,
@@ -52,17 +52,16 @@ struct Params {
 struct Path<T>(T);
 
 #[async_trait]
-impl<S, B, T> FromRequest<S, B> for Path<T>
+impl<S, T> FromRequestParts<S> for Path<T>
 where
     // these trait bounds are copied from `impl FromRequest for axum::extract::path::Path`
     T: DeserializeOwned + Send,
-    B: Send,
     S: Send + Sync,
 {
     type Rejection = (StatusCode, axum::Json<PathError>);
 
-    async fn from_request(req: &mut RequestParts<S, B>) -> Result<Self, Self::Rejection> {
-        match axum::extract::Path::<T>::from_request(req).await {
+    async fn from_request_parts(parts: &mut Parts, state: &S) -> Result<Self, Self::Rejection> {
+        match axum::extract::Path::<T>::from_request_parts(parts, state).await {
             Ok(value) => Ok(Self(value.0)),
             Err(rejection) => {
                 let (status, body) = match rejection {